Service manual

Schematic Diagrams
B - 18 VT8237A-3
B.Schematic Diagrams
VT8237A-3
Sheet 17 of 41
VT8237A-3
RXCLK 21
MDIO
DPRSLPVR
2.5VSBPLL
DNCMD7
Z1703
DPRSLPVR
C403
.1U_50V_06
2.5VS
3.3VS
H_A20M# 3
LPC_FRAME#
C377
1U_10V_06
C439
4.7U_10V_08
2.5VSBPLL
LPC_AD0
Z1717
Q21
2N3904
B
E C
AGP_BUSY# 8
VGATE
LVREF_SB
VGATE
NC_CPPE# 20
40mil
3.3V
VLAD0
H_PWRGD 3
VCOMPP
R261 360_1%_06
NC_CPPE#
Z1709
-PHYRST 21
LPC_AD[ 3:0]20,23,25
APIC D 0
BGA6C
VT8237A-BGA541
H25
G26
K26
J23
F26
G25
K22
K24
A11
B11
B9
B10
A10
C11
C10
A9
A7
B7
C7
B8
D8
C9
D10
A8
D11
B12
A12
C12
E7
T22
U22
E24
G23
L26
L25
E26
E25
L24
M26
H22
K23
K25
J26
J24
H26
H24
J22
E6
E11 E9 E10
AF4
L22
D9
P11 P12 P13 P14 P15 P16 R11 R15 R14 R13 R12 R16 R21 T11 T12 T16 T15 T14 T13
M24 N21 N22 N23 N24 N25 N26 P22 P23 P24 P25 P26 M21 M22 M23
AE4
AF3
AE6
AF6
C8
D12 E12 L21 K21
AD8
AF7
AE7
AD7
G24
F24
AE8
D7
AC5
AD4
U24
U26
T24
R26
T25
T26
U25
R24
V26
R22
P21
R23
U23
R25
T23
AC9
AC8
AB9
AD10
M25 L23 L19 M19 N19 P19AA21
AB19 AB22 AB25 AC18 AE17 W22 W25 AE19 AE22 AE25 AA9 T21 AA10 AB18 K19
F23
G22
F8
VAD00
VAD01
VAD02
VAD03
VAD04
VAD05
VAD06
VAD07
MCRS
MCOL
MTXD2
MTXD1
MTXD0
MTXENA
MTXCLK
MTXD3
MDCK
MDIO
MRXD3
MRXD1
MRXDV
MRXCLK
MRXERR
MRXD2
EECS
EEDO
EEDI/EEDI*
EECK
LANVCC
PLLVCC
PLLGND
VAD08
VAD09
VAD10
VAD11
VAD12
VAD13
VAD14
VAD15
VLVREF
UPCMD
DNCMD
UPSTB+
UPSTB-
DNSTB+
DNSTB-
VLCOMP
LANGND
MIIVCC4 MIIVCC2 MIIVCC3
VBAT
VCLK
MIIVCC1
GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND
VCCVK18
VCCVK4 VCCVK5 VCCVK6 VCCVK7 VCCVK8 VCCVK9
VCCVK10 VCCVK11 VCCVK12 VCCVK13 VCCVK14 VCCVK15 VCCVK16 VCCVK17
RTCX1
RTCX2
LREQ0
LFRM
MRXD0
MIIVCC25-1 MIIVCC25-2
VCCVK3 VCCVK2
LAD0
LAD1
LAD2
LAD3
VBE
VPAR
LREQ1
PHY RST
PWRGD
RSMRST
FERR
A20M
IGNNE
INIT
INTR
NMI
SMI
STPCLK
SLP
GHI/GPI22/GPO22
DPSLP/GPI23/GPO23
PCICLK
APICCLK,GPI19
APICD0/GPIO10
APICD1/GPIO11
VGATE/GPIO8
GPI28/GPO28/VIDSEL/SATALED,GPI28/GPO28/VIDSEL
VRDPSLP/GPI29/GPO29
AGPBZ/GPI 06
VCCVK19
VCCVK1
VCCVK20 VCCVK21 VCCVK22 VCCVK23GND
GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND
NC1
NC2
NC,PHYPWRDN
R263 4. 7K_06
C445
.1U_50V_06
-PHYPWRDN 21
VCCRTC
Z1713
C469
1U_10V_06
VDD3
R275 1K_06
SPCLK 2
LPC_AD3
Z1718
2.5V
R578 4.7K_04
VT8237R plus=> 10PF
VT8237A => 12PF
AP339A
H_CPUSLP# 3,5
Z1704
R567 4.7K_04
R551 33_1%_06
VCCRTC
R279
1.05K_1%_06
VLAD[0..7]
Z1705
C404
.1U_50V_06
C489
.1U_16V_04
32KHZX2
PM_DPRSLPVR 3,31
Z1708
R558 4.7K_04
R588 33_1%_06
LVREF_SB= 0.3V FOR VT8237R plus
LVREF_SB=0.45V FOR VT8237A
COL 21
SEECLK
LPC_AD2
EEPROM
GHI
C706
10U_10V_08
UPSTB7
GND_SBPLL
Z1716
LPC_AD[3:0]
C405
.1U_50V_06
1.05VS
TXD3 21
TXEN
RXD0 21
Z1715
SEEDI
2.5VS
H_INIT# 3
JBAT1
CON2_BAT
1
2
1
2
C419
*10P_50V_06
SEEDI
FB12
HCB2012KF-121T30_08
R716 1K_06
RSMRST#16,23
APICD0
R281
4.7K_06
C702
10U_10V_08
UPCMD7
C475
1U_10V_06
R267 360_1%_06
H_SMI# 3
RXD3 21
LPC_DRQ#0
Z1714
2.5VS
LPC_DRQ#1
AGP_BUSY#
C468
.1U_50V_06
3.3V
R359
10K_06
SEECS
VLAD2
SEEDO
C481
.1U_50V_06
2.5VS
H_NMI 3
DNSTB7
APICD1
D39
RB751V
A C
VLAD[0.. 7]7
TXD0 21
2.5VS
2.5VS
VLAD4
MDIO 21
R610
1.5K_04
R630 1K_06
R340
10K_06
VLAD1
TXEN 21
UPSTB#7
VPAR
32KHZX2
R325 2.2_08
AGP_BUSY #
Q20
DTC114EUA
CE
B
H_DPSLP# 3
H_IGNNE# 3
C479
12P_50V_06
ALL_PW ROK3,15,24
PM_DPRSLPVR
Near to
South
Bridge
H_FERR# 3
R313 33_1%_06
RXER 21
VBE#7
Z1701
TXD1 21
LPC_DRQ#0
VLAD3
LPC_DRQ#1
VCCRTC
DPRSLPVR
2.5VS
SEECLK
VLAD6
SEECS
R277
*33_06
R559 0_04
C484
12P_50V_06
VPAR8
SEEDO
3.3V
VCLK_SB2
TXCLK 21
R555 33_1%_06
Z1702
2.5VS
GHI
R282 360_1%_06
R563 33_1%_06
40mil
ADD GND SHIELD
MDIO
LPC_AD1
R570 *4.7K_04
MDC 21
RXD2 21
SPCLK
R587 33_1%_06
2.5V
VCOMPP
R569 33_1%_06
GND_SBPLL
SATA_LED#
DEL GHL PULL UP RESISTER
2.5VSBPLL
LVREF_SB
R564 4.7K_06
S11 S121
H_STPCLK# 3
Z1707
3.3VS
APIC D 1
SEEDI 16
SATA_LED# 28
H_INTR 3
ALL_PW ROK
Z1710
VLAD5
RXD1 21
32KHZX1
Y2
32.768KHZ
1
3
2
4
RXDV 21
3.3VS
VLAD7
32KHZX1
R318 10K_06
SPCLK
CRS 21
U11
CAT93C46S-26490T
3
2
1
4
8
5
6 7
DI
SK
CS
DO
VCC
GND
NC1 NC2
DNSTB#7
Z1706
R580
*100K_04
ALL_PWROK3,15,24
C374
4.7U_10V_08
C448
.1U_50V_06
J1
JOPEN
21
Z1711
TXD2 21
GND_SBPLL
D37
RB751V
A C
R717
1K_06
LPC_FRAME#20, 23,25
Must use +3.3VSUS if it want to wake
on LAN from resume function well.
VCCRTC